Key legal question
Whether the constitutional complaint could be entered into despite non-payment of the court advance.
Extracted holding
No. The complaint was not entered into because the advance costs were neither paid in cash nor duly evidenced as paid within the deadline.
Extracted reasoning
After a final non-extendable grace period under Art. 62(3) BGG, the complainant remained in default. Under Art. 117 BGG in conjunction with Art. 108(1)(a) BGG, non-entry followed as announced.